OregonFlora species comparison

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Juncus saximontanus

Rocky Mountain rush
Habit Plants perennial, 20–60 cm tall, rhizomatous.
Leaves

flat; iris-like, blue-green, partially septate;

auricles 0–1.2 mm.
Inflorescences

(2)10–20 clusters; clusters 4–25-flowered.
Flowers

tepals 6, often green (red) to medium brown (dark brown);

stamens usually 6;

filaments 0.6–1.1 mm;

anthers 0.4–0.9 mm;

style 0.4–0.9 mm.
Capsules

shorter than to longer than the tepals, brown to dark brown or blackish, obtuse or acute, 1-chambered.
Seeds

0.4–0.5 × 0.25–0.3 mm, apiculate, reticulate.

Juncus saximontanus
Distribution
[WildflowerSearch map]
[BONAP county map]
Discussion

Shores, creek banks, springs, swales, peatlands, ditches. 100– 2500m. BW, Casc, ECas, Lava, Sisk, WV. CA, ID, NV, WA; north to AK, northeast to Manitoba, southeast to TX, south to Mexico. Native.

Juncus saximontanus has six stamens per flower and is usually found east of the Cascade Range. It is weakly separated from J. ensifolius, which has three stamens per flower. Tepal color, inflorescence shape, and style length are unreliable means to separate them. A few plants have three to six stamens and are of uncertain status, perhaps representing hybrids.
Source Flora of Oregon, volume 1, page 283
Peter Zika
Sibling taxa
J. acuminatus, J. anthelatus, J. articulatus, J. balticus, J. bolanderi, J. brevicaudatus, J. breweri, J. bryoides, J. bufonius, J. bulbosus, J. canadensis, J. capillaris, J. capitatus, J. compressus, J. confusus, J. conglomeratus, J. covillei, J. diffusissimus, J. drummondii, J. dudleyi, J. effusus, J. ensifolius, J. ensifolius x Juncus nevadensis, J. exiguus, J. falcatus, J. filiformis, J. gerardi, J. hemiendytus, J. hesperius, J. howellii, J. inflexus, J. interior, J. kelloggii, J. laccatus, J. lescurii, J. longistylis, J. marginatus, J. mertensianus, J. mexicanus, J. nevadensis, J. occidentalis, J. orthophyllus, J. oxymeris, J. parryi, J. patens, J. pelocarpus, J. planifolius, J. ranarius, J. regelii, J. supiniformis, J. tenuis, J. tiehmii, J. torreyi, J. triglumis, J. trilocularis, J. uncialis
Synonyms Juncus ensifolius var. brunnescens, Juncus ensifolius var. montanus, Juncus saximontanus var. robustior, Juncus saximontanus var. saximontanus, Juncus xiphioides, Juncus xiphioides var. xiphioides
Web links 
Unless otherwise noted, all data comes from OregonFlora.



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